Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating expenses:
Research and development	$ 715	$ 1,349	$ 2,096	$ 2,780
General and administrative	1,370	1,381	2,477	2,615
Total operating expenses	2,085	2,730	4,573	5,395
Operating loss	(2,085)	(2,730)	(4,573)	(5,395)
Other income:
Interest income (expense), net	148	11	304	12
Other income				9
Interest and other income, net	148	11	304	21
Net loss	$ (1,937)	$ (2,719)	$ (4,269)	$ (5,374)
Net loss per share, basic	$ (0.62)	$ (1.97)	$ (1.46)	$ (3.90)
Net loss per share, diluted			$ (1.46)	$ (3.90)
Weighted average number of common shares outstanding, basic (In Shares)	3,105,956	1,383,280	2,921,884	1,376,849
Weighted average number of common shares outstanding, diluted (In Shares)			2,921,884	1,376,849